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General Assembly and Scientific Symposium, URSI

作者： Shilian Zheng Xiaoniu Yang Science and Technology on Communication Information Security Control Laboratory Jiaxing China School of Telecommunications Engineering Xidian University Xi'an China

Modulated wideband converter (MWC) based sub-Nyquist sampling can be used for wideband spectrum sensing in cognitive radio networks. In this paper, a method is proposed for detecting whether the reconstruction process is unsuccessful due to non-sparse spectrum in MWC based wideband spectrum sensing to avoid causing harmful interference to primary users. The proposed method exploits the correlation between two consecutively recovered support sets. Simulation results show that the method can judge whether the reconstruction is successful or not with high probability. Compared with traditional spectrum sensing without reconstruction failure detection, the proposed method can lower the interference probability to primary users greatly when spectrum is not sparse.

关键词： Sensors Wideband Cognitive radio Interference Correlation Noise Compressed sensing

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Robust two-factor authentication and key agreement preserving user privacy

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International Journal of Network security 2014年第3期16卷 229-240页

作者： Jiang, Qi Ma, Jianfeng Li, Guangsong Yang, Li School of Computer Science and Technology Xidian University No.2 South Taibai Road Xi'an Shaanxi 710071 China Science and Technology on Communication Information Security Control Laboratory 36 Research Institute CETC Jiaxing 314033 China Department of Information Research Zhengzhou Information Science and Technology Institute No.5 Wenhua Road Zhengzhou Henan 450002 China

In this paper, we first give a new set of design goals for anonymous two-factor authentication scheme. The new set is a refinement of some previously proposed requirement sets;it not only eliminates the redundancies, conflicts and ambiguities of the old ones, but also provides more desired security properties. Then we demonstrate that both of Sun et al.'s scheme and Li et al.'s scheme fail to satisfy all the security goals we propose. Specifically, we point out that Sun et al.'s scheme still suffers from the smart card loss problem and fails to provide user untraceability. Li et al.'s scheme is vulnerable to desynchronization attack. In order to remedy these defects in their schemes, we propose a robust two-factor authentication and key agreement scheme with user privacy preservation achieving all the goals we present. Compared with the previous schemes, our scheme not only provides more security guarantees, but also is still efficient both in computation and communication cost.

关键词： Smart cards

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A secure model based on game theoretic malicious detection mechanism for MANETs

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Journal of information and Computational science 2014年第2期11卷 481-491页

作者： Wang, Xiao Feng, Renjian Wu, Yinfeng Ren, Yongji Wan, Jiangwen School of Instrumentation Science and Opto-Electronics Engineering Beihang University Beijing 100191 China Department of Command Naval Aeronautical and Astronautical University Yantai 264001 China Science and Technology on Communication Information Security Control Laboratory Jiaxing 314033 China

Mobile Ad Hoc network security is facing tougher challenges due to emerging purposive strategic attacks conducted by smart malicious nodes. All these purposive strategic attacks run out of the throughput which results in network crashes. In this paper, we have proposed a secure model based on two-level dynamic Bayesian game theory to recognize these purposive strategic attacks in MANETs and establish a malicious nodes detection system isolating such attacks. The simulation results have demonstrated that the proposed model can effectively enhance cooperative performance and maintain packet forwarding rate under the purposive strategic attacks. Besides, through two-level decision, the system performs well in reducing the false alarming rate for large proportion of malicious nodes in MANETs. Copyright © 2014 Binary information Press.

关键词： Game theory

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Passive satellite localization using TDOA/FDOA/AOA measurements

Passive satellite localization using TDOA/FDOA/AOA measureme...

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2013 IEEE Conference Anthology, ANTHOLOGY 2013

作者： Bin, Yang Zheng Lei, Wang Qun, Chen Pei Nan, Lu An Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang 314033 China

ISBN: (纸本)9781479916603

Dual satellite TDOA/FDOA localization scheme has problems of multiple ambiguous solutions and poor localization results in the sub-satellite area along the dual satellite baseline direction. Passive localization using TDOA and FDOA measurements usually does not have direct solution and requires numerical methods to determine the emitter's geolocation. We suggest a satellite passive localization method fusing the TDOA/FDOA/AOA measurements based on particle swarm optimization(PSO), which provides an evolutionary computation method to solve the nonlinear optimal problem. To be more close to the practical use, the WGS-84 earth model is adopted in this work. However, PSO can not be directly applied to geolocation problem due to the nonlinear constraint of earth surface. We examined a PSO based method which let the particle swarm fly on the earth surface. Computer simulation results show the effectiveness of the new localization method. © 2013 IEEE.

关键词： Time difference of arrival

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Critical nodes selection based on trust evaluation in Ad Hoc networks

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Tongxin Xuebao/Journal on communications 2014年 35卷 213-219页

作者： Liu, Zhuo-Chao Yang, Li Jiang, Qi Wang, Wei Cao, Chun-Jie School of Computer Science and Technology Xidian University Xi'an710071 China Science and Technology on Communication Information Security Control Laboratory The 36th Research Institute of CETC Jiaxing314033 China College of Information Science and Technology Hainan University Haikou570228 China

There are some critical nodes in Ad Hoc networks, and the failure of these critical nodes can critically affect the performance of the network. For the aim of selecting the important and trusted critical nodes in Ad Hoc networks, the definition of critical nodes is given, meanwhile, a critical nodes selection algorithm based on trust evaluation is proposed. By using the node contraction, the importance degree of the node is calculated. Then combined with D-S evidence theory, the trust evaluation model of critical node is presented, which is used to obtain the objective trust of the node and to judge the credibility of the node. Finally, the critical nodes are selected by considering of the importance degree and the credibility of the node. Simulation results show that when those critical nodes are failure, selected by the proposed algorithm, the network performance is decreasing significantly. ©, 2014, Editorial Board of Journal on communications. All right reserved.

关键词： Ad hoc networks

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Hybrid Programming Based on Matlab Engine technology

Hybrid Programming Based on Matlab Engine Technology

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International Conference on Computer sciences and Applications (CSA)

作者： Huan Li Wenhua Ye Science Technology on Communication Iinformation Security Control Laboratory Jiaxing Zhejiang China Science Technology on Communication Iinformation Security Control Laboratory No.36 Research Institute of CETC Jiaxing Zhejiang China

In this paper, a dual language hybrid programming based on Matlab engine technology and example of implementation are described. A lot of Matlab functions can be used by this technology effectively, which reducing the workload of the program, also it can inherite the excellent VC program interface, therefore it is a kind of good hybrid program design method for debugging hardware and software interfaces, programming Human Machine Interface, etc.

关键词： MATLAB Engines Programming Libraries Arrays Prototypes

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Adaptively secure key-policy ABE scheme with fast decryption

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Tongxin Xuebao/Journal on communications 2014年 35卷 26-32页

作者： Li, Qi Ma, Jian-Feng Xiong, Jin-Bo Liu, Xi-Meng School of Computer Science and Technology Xidian University Xi'an710071 China Shaanxi Key Laboratory of Network and System Security Xidian University Xi'an710071 China Science and Technology on Communication Information Security Control Laboratory Jiaxing314033 China Faculty of Software Fujian Normal University Fuzhou350108 China School of Telecommunication Engineering Xidian University Xi'an710071 China

In the existing adaptively secure ABE (attribute-based encryption) schemes, the decryption cost goes linearly with the number of attributes that are used in decryption. An adaptively secure key-policy ABE (FKP-ABE) scheme with fast decryption is proposed, where constant size of computation overhead is implemented in decryption. This scheme is constructed on composite order bilinear groups and supports any monotonic access structure that can be expressed by LSSS (linear secret sharing schemes). The proposed scheme is proved to be adaptively secure in the standard model. ©, 2014, Editorial Board of Journal on communications. All right reserved.

关键词： Cryptography

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Passive satellite localization using TDOA/FDOA/AOA measurements

Passive satellite localization using TDOA/FDOA/AOA measureme...

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IEEE Conference Anthology

作者： Yang Zheng Bin Wang Lei Chen Pei Qun Lu An Nan Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang China

关键词： Satellites Earth Frequency measurement Optimization Maximum likelihood estimation Particle swarm optimization

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Virtex-7 FPGA-Based High-Speed Signal Processing Hardware Platform Design

Virtex-7 FPGA-Based High-Speed Signal Processing Hardware Pl...

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2013 IEEE 4th International Conference on Electronics information and Emergency communication

作者： Wenhua Ye Huan Li Science Technology on Communication Iinformation Security Control Laboratory No.36 Research Institute of CETC

ISBN: (纸本)9781467349345

With the development of digital signal processing technology, the demand on the signal processor speed has become increasingly high. This paper describes the high-speed signal processing hardware platform design. There are two boards, high-speed signal processing carrier board using Xilinx newest Virtex-7 FPGA family XC7VX485T chip as high-speed signal processor, data Conversion daughter card using ADS5474 and DAC5686 from TI to achieve high-speed signal collection and digital to analog conversion, and the FMC interface is used to transform high-speed signal between daughter cards and carrier board. This design provides a hardware implementation and algorithm verification platform for high-speed digital signal processing system.

关键词： Virtex-7 FPGA hardware platform interface design PCB

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Implementation of arbitrary waveform generator using direct RF synthesis

Implementation of arbitrary waveform generator using direct ...

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2012 5th Global Symposium on Millimeter-Waves, GSMM 2012

作者： Zhao, Yun Wang, LiJun Xu, JianLiang Science and Technology on Communication Information Security Control Laboratory Jiaxing Zhejiang 314033 China No.36 Research Institute of CETC Jiaxing Zhejiang 314033 China

ISBN: (纸本)9781467313032

Along with the DAC technology evolved, it is possible to implement direct RF synthesis using exclusively digital technologies and it promote the rapid progress of transmitter technology for software defined radio (SDR). This paper presents implementation structure of an arbitrary waveform generator (AWG) using direct RF synthesis in FPGA, which include RF carrier generator and RF modulator, can be used to generate a wideband tuning and very fast frequency switching arbitrary waveform. © 2012 IEEE.

关键词： Software radio

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